Water jacket



July 31, 1923-- l C. DREFAHL ET AL WATER JACKET 'Filed Dec.- 6 191-9 2Shoots-Sheet 2 6 v, Z 3% NW W mi Z JWM K LOUIS c. DRE'FAHL, or LAKEWOOD;AND

WHITFIELD n. can-son, or soU'rH EUCLID,

OHIO, ASSIGNORS .TO THE GRASSELLI CHEMICAL COMPANY, OF CLEVELAND,

OHIO, CORPORATION OF OHIO.

WATER JACKET;

Application filed December T all whom it may concern Be it known thatwe, LOUIS O. DRESF'AHL and .VHITFIELD R. CARSON, both citizens of theUnited States, and residents of Lake wood, county of Cuyahoga, and Stateof.

Ohio, and of South Euclid, county of Guy ahoga, and State of Ohio,respectively, have jointly invented a new and useful Improvement in-Water Jackets, of which the following is a specification, the principleof the invention being herein explained and the best mode in which wehave contemplated applying that principle, so as to distinguish it fromother inventions.

The present invention, relating, as indicated, to water ackets, is moreparticularly directed to the use of the improved type of water jacket ina furnace, such as is commonly used for the making of silicate of soda.Silicate of soda can be made by the fusion of sand' and salt cake, butit is found that this mixture has a rapid corrosive action on therefractory material. with which the furnaces are commonly lined. Thiscorrosive action is so rapid that it necessitates the frequent shut-downof the furnace for repairs and replacements,'and greatly lowers theoutput of the furnace. The present invention is particularly directed toan improved type of furnace for use in making silicate of soda,whichwill avoid the results noted above and which which will permit of apractically continuous operation of the furnace chamber through longperiods of time. These improved results are secured through the use ofour improved type of water jacket, and. its arrangement and mounting inthe furnace walls. To the accomplishment of the foregoing and relatedends, said invention, then, consists of the means hereinafter. fullydescribed and particularly pointed out in the claim.

The annexed drawing'and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawings r Fig. 1'is an elevation of our improvedfurnace partially in section, "showingthe general location of the waterjackets; Fig. 2 isa side elevation of the jacket; Figs. 3, 4:

and 5 are sections on the lines 3-3, 4-4,.

' e, 1919. serial no. 343,095.

and 5.5, respectively, in Fig. 2; Fig. 6*is a partial side elevation ofamodified construction; Fig. 7 is: a section on the line 7-7, Fig. 6;and Fig. 8 is a partial transverse section through the furnace chambershowing the mounting ofthe water jacket with respect to the walls of thefurnace. 1

In Fig. 1 therelSI'ShOWIl a furnace of a common typev havingspaced walls1 aindean arched roof 2, and being provided witha series of waterjackets 3 extending around i mea er P-ArNT" cr tics. I

the walls of the furnace. 1 Each. of these I jackets 3 is provided withsuitable intake conduits 4c, and with outlet conduits 5, which may beconnected in any desiredmanner of sources of supply and drain Each waterjacket is also provided with .manholes 6 and suitable removable covers 7therefor. The construction of the water jacket is shown in Figs. 3 to 7,inclusive. The jacket consists of two open box-like members 8 and 9,received one within the other, and welded along their over-lapping edges10 to make atight and integral container. Wherever there is an inletor'outlet connection the connection is formed in the manner shown inFigs. 3 to 7, certain connections being indicated in Figs. 3 and 4, andconsisting of a suitably formed col lar 20 of sheetmetal adapted toclosely fit against the rounded edge of the part 9 of the jacket, towhich it is welded to provide a seamless joint. The same construction isused for the connections shown in Figs. 5, 6 and 7, while for allinletconnections abafile plate 12 iS'PI'OVldQd Within the jacket tocause an improved spreading and distribution of the incoming water. iThe re sulting water jacket is as nearly perma nentlywatertight as it ispossible to make it, and the single joint or seam is provided ontheends, top and bottom of the jacket and ata point spaced a considerabledistance from the front. wall 13 of the jacket,

which isnext to the furnace chamber.

In Fig. 8 there. is shown one wall of the furnace chamber which consistsofsuitable refractory material.

The water jackets 3 are built into this furnace'walland'extendj throughflush with the wall of the furnace so thatthey are in direct contactwith the molten material therein. a I

A disadvantage of course of having a water jacket in direct'contac'twith the mol- 5 loss, and to avoid any great loss the depth of the waterjackets is kept as low as possible, so that in the furnace the jacketsdo not extend more than a few inches above the maximum height of'thecharge at any time during fusion. They are so mounted in the walls ofthe furnace as to extend a short distance above and below the flux line,at which point the greatest corrosion takes place.

It has'been found that a furnace. so constructed is capableofpractically indefinite and continuous operation, and whilea smallamount of heat from the furnace is lost through the radiation of thewaterin the jacketsthis slight loss is more than com-t pensated for bythe better action and very much longer life of the furnace chamber.

:A modification of the-jacket is shown in Figs. 6 and 7, in which theoutlet connection is disposed at an angle, but this conduit 11is'attached in the same manner asshown in previously described figures.

Other modes of applying the principle of our invention may be employedinstead of the. one explained, changerbeing made as regards themechanism herein 'disclosec, provided the means stated by the followingclaim or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as ourinvention In a silicate of soda furnace the combination of a furnacechamber adapted to receive and melt a mixed charge of materials, saidchamber having its walls about its upper and lower portionsformedofrefractory material, a narrow .belt of water jackets disposed at anintermediate point in the inner wallsv of said furnace between saidupper and lower sections of refractory material, said water jacketedsection being disposed in contact with the material to be melted andvatthe normal flux line of the molten charge and extending a slightdistance above and below thesame;

Signed by us, this 3rd day of December, 1919.

LOUIS .C. DREFAl-IL. W'HITFIELD R. CARSON.

